Advertising the "Mosquito Protector" Hat with Valve for Tobacco Smoking

New York, New York: Fred A. Bornstein Co, 1911. Very good to near-fine. Letter folds.. A c.1911 printed circular advertising a "Mosquito Protector" hat, complete with mosquito-proof mesh, horse hair mesh window, and a "self-closing valve" that "permits the smoking of Cigars or Pipes". Marketed to fishermen, hunters, surveyors, and engineers. Includes a 3" by 3" lithographed image of a man smoking with the mosquito protector on. Measures approx. 11" by 8.5